Date: Sun, 27 Jul 2003 15:37:01 +0100 From: Mark Blackman <mark@exonetric.com> To: Gary Jennejohn <garyj@jennejohn.org> Cc: freebsd-current@freebsd.org Subject: Re: device driver memory leak in 5.1-20030726? Message-ID: <C882BF18-C03F-11D7-A23D-00039315D3FE@exonetric.com> In-Reply-To: <200307262102.h6QL2nPD012268@peedub.jennejohn.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Saturday, July 26, 2003, at 10:02 PM, Gary Jennejohn wrote: > > Mark Blackman writes: >> I'm seeing the same 'kmem_malloc(4096): kmem_map too small: XXXXX >> total >> allocated' >> messages that a few other have reported. > [snip] >> From these symptoms, I'm speculating that one or more device drivers >> are producing kernel memory leaks and either triggering the >> 'kmem_map too small' messages or pushing all of the userland processes >> out of the way. Is this a reasonable interpretation? >> >> Does anyone else see symptoms that might lead to this conclusion? >> > > I'm seeing exactly the same thing when I try to access my Archos > Jukebox (a USB 2.0 device). This didn't happen with a kernel made > before July 20, although I can't say when exactly the leak (if there > is one) was introduced, since I only make a new kernel every few > weeks. > > Eventually usb_allocmem fails and shortly thereafter I get the > ``kmem_map > too small'' panic. > > Unfortunately, panicing in ddb results in a hang - no crashdump. > > --- > Gary Jennejohn / garyj[at]jennejohn.org gj[at]freebsd.org gj[at]denx.de > > Perhaps it's a USB bug. There seems to be some correspondence between the use of the USB Speedtouch ADSL modem and the out-of-control devbuf allocations. Mark Blackman Exonetric Consulting
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?C882BF18-C03F-11D7-A23D-00039315D3FE>